CVE-2024-2961

HIGHPre-NVD 7.39.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 88% probability of exploitation within the next 30 days (top 0.2% of all CVEs). CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3 retained for reference (NVD's own analysis pending). Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: cisa-adp, epss, ghsa
Weaponized
7.3
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 88%
CISA-KEV: Not listedEPSS: 88%CVSS: 7.3Exploit: NoneExposed: 0

A fix is available — apply it.

The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.

CVSS v3
7.3
EG Score
9.0(high)
EG Risk
76(Track)
EG Risk 76/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation88% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
99.8%
KEV
Not listed

Published

April 17, 2024

Last Modified

July 14, 2026

Advisory Details (10)

Auto-updated Jul 14, 2026
Patch available.
generic

oss-security - Re: The GNU C Library security advisories update for 2024-04-17: GLIBC-SA-2024-0004/CVE-2024-2961: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence

http://www.openwall.com/lists/oss-security/2024/05/27/6
generic

oss-security - Re: The GNU C Library security advisories update for 2024-04-17: GLIBC-SA-2024-0004/CVE-2024-2961: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence

http://www.openwall.com/lists/oss-security/2024/05/27/2
generic Patch Available

[SECURITY] [DLA 3807-1] glibc security update

https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html
generic

oss-security - Re: The GNU C Library security advisories update for 2024-04-17: GLIBC-SA-2024-0004/CVE-2024-2961: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence

http://www.openwall.com/lists/oss-security/2024/04/18/4
generic

oss-security - The GNU C Library security advisories update for 2024-04-17: GLIBC-SA-2024-0004/CVE-2024-2961: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence

http://www.openwall.com/lists/oss-security/2024/04/17/9
generic

oss-security - Re: The GNU C Library security advisories update for 2024-04-17: GLIBC-SA-2024-0004/CVE-2024-2961: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence

http://www.openwall.com/lists/oss-security/2024/04/24/2
generic

[SECURITY] Fedora 38 Update: glibc-2.37-19.fc38 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/
generic

[SECURITY] Fedora 39 Update: glibc-2.38-18.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/
generic

[SECURITY] Fedora 40 Update: glibc-2.39-8.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/
generic

sourceware.org Git - glibc.git/blob - advisories/GLIBC-SA-2024-0004

https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004

Vendor Advisories for CVE-2024-2961(15)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunscd (2.39-0ubuntu8.1) @ noble2026-05-22ubuntu
ubuntunscd (2.38-1ubuntu6.2) @ mantic2026-05-22ubuntu
ubuntunscd (2.23-0ubuntu11.3+esm6) @ xenial2026-05-22ubuntu
redhatrhcos-414.92.202410112148-02024-10-23redhat
redhatrhcos-413.92.202410081857-02024-10-16redhat
redhatrhcos-415.92.202410020020-02024-10-09redhat
redhatrhcos-416.94.202410020522-02024-10-09redhat
redhatrhcos-412.86.202410010038-02024-10-09redhat
redhatservice-interconnect/skupper-site-controller-rhel9:1.4.5-22024-06-26redhat
redhatglibc-0:2.17-326.el7_9.32024-06-04redhat
redhatglibc-0:2.28-101.el8_2.22024-05-29redhat
redhatglibc-0:2.34-28.el9_0.62024-05-28redhat
redhatglibc-0:2.34-60.el9_2.142024-05-28redhat
redhatglibc-0:2.28-151.el8_4.22024-05-23redhat
redhatglibc-0:2.28-225.el8_8.112024-05-23redhat
redhatglibc-0:2.34-100.el9_4.22024-05-23redhat
redhatglibc-0:2.28-251.el8_10.12024-05-22redhat
redhatglibc-0:2.28-189.10.el8_62024-05-09redhat
redhatglibc-0:2.28-236.el8_9.132024-05-07redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 2× in last 7d / 15× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 02:35 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-15 16:56 UTCEPSS rescore
  4. 2026-07-15 16:56 UTCEPSS rescore
  5. 2026-07-13 06:11 UTCEPSS rescore
  6. 2026-07-11 07:22 UTCOSV refresh
  7. 2026-07-06 16:26 UTCEPSS rescore
  8. 2026-07-06 16:26 UTCEPSS rescore
  9. 2026-07-01 15:05 UTCEPSS rescore
  10. 2026-06-28 04:55 UTCEPSS rescore
  11. 2026-06-28 04:55 UTCEPSS rescore
  12. 2026-06-24 14:04 UTCEPSS rescore
  13. 2026-06-24 14:04 UTCEPSS rescore
  14. 2026-06-23 21:32 UTCEPSS rescore
  15. 2026-06-23 21:32 UTCEPSS rescore
  16. 2026-06-22 14:22 UTCOSV refresh
  17. 2026-06-17 17:52 UTCEPSS rescore
  18. 2026-06-17 17:52 UTCEPSS rescore
  19. 2026-06-15 17:47 UTCEPSS rescore
  20. 2026-06-12 23:11 UTCEPSS rescore
  21. 2026-06-12 23:11 UTCEPSS rescore
  22. 2026-06-10 22:17 UTCEPSS rescore
  23. 2026-06-06 13:46 UTCEPSS rescore
  24. 2026-06-06 13:46 UTCEPSS rescore
  25. 2026-06-05 06:09 UTCEPSS rescore
Show 24 more
  1. 2026-06-05 06:09 UTCEPSS rescore
  2. 2026-06-04 22:39 UTCOSV refresh
  3. 2026-06-02 20:12 UTCEPSS rescore
  4. 2026-06-02 20:12 UTCEPSS rescore
  5. 2026-05-29 13:43 UTCEPSS rescore
  6. 2026-05-29 13:43 UTCEPSS rescore
  7. 2026-05-27 13:40 UTCEPSS rescore
  8. 2026-05-27 13:40 UTCEPSS rescore
  9. 2026-05-26 13:43 UTCEPSS rescore
  10. 2026-05-26 13:43 UTCEPSS rescore
  11. 2026-05-26 07:18 UTCEPSS rescore
  12. 2026-05-26 07:18 UTCEPSS rescore
  13. 2026-05-22 21:16 UTCEPSS rescore
  14. 2026-05-22 21:16 UTCEPSS rescore
  15. 2026-05-22 21:16 UTCEPSS rescore
  16. 2026-05-22 21:16 UTCEPSS rescore
  17. 2026-05-22 03:00 UTCEG score recompute
  18. 2026-05-22 03:00 UTCVendor advisory
  19. 2026-05-22 03:00 UTCGHSA enrichment
  20. 2026-05-18 21:30 UTCEPSS rescore
  21. 2026-05-18 21:30 UTCEPSS rescore
  22. 2026-05-18 21:30 UTCEPSS rescore
  23. 2026-05-18 21:30 UTCEPSS rescore
  24. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(8 references)

Working exploit code is in the public domain (1 Metasploit module) (7 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsuce0155/CVE-2024-2961
    First seen Feb 4, 2025

    CVE-2024-2961 Cnext RCE Exploit with Buddyforms 2.7.7

    Open source ↗
  • GitHub PoCkyotozx/CVE-2024-2961-Remote-File-Read
    First seen Jan 27, 2025

    This script demonstrates a proof-of-concept (PoC) for exploiting a file read vulnerability in the iconv library, as detailed in Ambionics Security's blog https://www.ambionics.io/blog/iconv-cve-2024-2961-p1.

    Open source ↗
  • Metasploitexploit/linux/http/magento_xxe_to_glibc_buf_overflow✓ verified
    First seen Jul 26, 2024

    CosmicSting: Magento Arbitrary File Read (CVE-2024-34102) + PHP Buffer Overflow in the iconv() function of glibc (CVE-2024-2961)

    Open source ↗
  • GitHub PoCkjdfklha/CVE-2024-2961_poc
    First seen Jun 4, 2024
    Open source ↗
  • GitHub PoCambionics/cnext-exploits
    First seen May 27, 2024

    Exploits for CNEXT (CVE-2024-2961), a buffer overflow in the glibc's iconv()

    Open source ↗
  • GitHub PoCrvizx/CVE-2024-2961
    First seen May 20, 2024

    CVE-2024–2961 Security Issue Mitigation Script

    Open source ↗
  • GitHub PoCrvzsec/CVE-2024-2961
    First seen May 20, 2024

    CVE-2024–2961 Security Issue Mitigation Script

    Open source ↗
  • GitHub PoCmattaperkins/FIX-CVE-2024-2961
    First seen Apr 24, 2024

    Quick mitigation script

    Open source ↗

Frequently asked(5)

What is CVE-2024-2961?
CVE-2024-2961 is a high vulnerability published on April 17, 2024. The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
When was CVE-2024-2961 disclosed?
CVE-2024-2961 was first published in the National Vulnerability Database on April 17, 2024, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-2961 actively exploited?
CVE-2024-2961 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-2961?
CVE-2024-2961 has a CVSS v3.1 base score of 7.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2024-2961?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-2961, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2024-2961

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